The Assist Arm / Helper Arm is attached to the side of the tire changer and is used for mounting and demounting tires.
Mondolfo Ferro RPX Assist Arm for Swing Arm Tire Changers
Startline by Mondolfo Ferro HELPER-4FD Tire Changer Assist Arm
SX1 HELPER tire changer assist arm is a practical and functional device designed to make mounting and demounting operations quicker, more precise and safer, and is capable of working on all types of tires — including ultra low profile, run flat tires, and alloy wheels.
Mondolfo Ferro Super RM Eagle Assist Arm for Tire Changers